-/* Copyright (C) 1993, 1996, 1997, 1998 Free Software Foundation, Inc.
- This file is part of the GNU IO Library.
+/* Copyright (C) 1993-2019 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
- This library is free software; you can redistribute it and/or
- modify it under the terms of the GNU General Public License as
- published by the Free Software Foundation; either version 2, or (at
- your option) any later version.
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
- This library is distributed in the hope that it will be useful, but
- WITHOUT ANY WARRANTY; without even the implied warranty of
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- General Public License for more details.
+ Lesser General Public License for more details.
- You should have received a copy of the GNU General Public License
- along with this library; see the file COPYING. If not, write to
- the Free Software Foundation, 59 Temple Place - Suite 330, Boston,
- MA 02111-1307, USA.
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <https://www.gnu.org/licenses/>.
- As a special exception, if you link this library with files
- compiled with a GNU compiler to produce an executable, this does
- not cause the resulting executable to be covered by the GNU General
- Public License. This exception does not however invalidate any
- other reasons why the executable file might be covered by the GNU
- General Public License. */
+ As a special exception, if you link the code in this file with
+ files compiled with a GNU compiler to produce an executable,
+ that does not cause the resulting executable to be covered by
+ the GNU Lesser General Public License. This exception does not
+ however invalidate any other reasons why the executable file
+ might be covered by the GNU Lesser General Public License.
+ This exception applies to code released by its copyright holders
+ in files containing the exception. */
#include "libioP.h"
int
-_IO_ungetc (c, fp)
- int c;
- _IO_FILE *fp;
+_IO_ungetc (int c, FILE *fp)
{
int result;
CHECK_FILE (fp, EOF);
if (c == EOF)
return EOF;
- _IO_cleanup_region_start ((void (*) __P ((void *))) _IO_funlockfile, fp);
- _IO_flockfile (fp);
+ if (!_IO_need_lock (fp))
+ return _IO_sputbackc (fp, (unsigned char) c);
+ _IO_acquire_lock (fp);
result = _IO_sputbackc (fp, (unsigned char) c);
- _IO_funlockfile (fp);
- _IO_cleanup_region_end (0);
+ _IO_release_lock (fp);
return result;
}
-#ifdef weak_alias
weak_alias (_IO_ungetc, ungetc)
-#endif